31523146123 has 16 divisors (see below), whose sum is σ = 36324311040. Its totient is φ = 26796613536.

The previous prime is 31523146091. The next prime is 31523146177. The reversal of 31523146123 is 32164132513.

It is not a de Polignac number, because 31523146123 - 2⁵ = 31523146091 is a prime.

It is a super-2 number, since 2×31523146123² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31523144123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3007590 + ... + 3018052.

It is an arithmetic number, because the mean of its divisors is an integer number (2270269440).

Almost surely, 2^31523146123 is an apocalyptic number.

31523146123 is a deficient number, since it is larger than the sum of its proper divisors (4801164917).

31523146123 is a wasteful number, since it uses less digits than its factorization.

31523146123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13986.

The product of its digits is 12960, while the sum is 31.

Adding to 31523146123 its reverse (32164132513), we get a palindrome (63687278636).

The spelling of 31523146123 in words is "thirty-one billion, five hundred twenty-three million, one hundred forty-six thousand, one hundred twenty-three".